*{
    margin: 0;
    padding: 0;
}
img{
    width: 100%;
    height: 100%;
    /* 去除底部留白 */
    display: block;
}
ul,ol,li{
    list-style: none;
}
h1,h2,h3,h4,h5,h6{
    font-weight: 400;
    font-size: 14px;
}
a{
    text-decoration: none;
}
html,body{
    width: 100%;
    height: 100%;
}